Product Name: BASF Melagard MC
Manufacturer: BASF SE, 67056 Ludwigshafen, Germany
Use: Used as a light stabilizer in polymers and plastics
Emergency Contact: BASF Emergency Number: +49 180 2273-112
Synonyms: Benzotriazole-based UV absorber blend for plastics and coatings
Product Code: Internal reference and batch numbers provided by BASF labeling
Revision Date: Listed clearly on product label for traceability purposes
Classification: GHS Category: Eye irritation, Skin sensitization
Label Elements: Signal Word: Caution
Hazard Pictograms: Exclamation mark (GHS07) displayed
Hazard Statements: Causes mild eye irritation, possible skin allergy on repeated exposure
Precautionary Statements: Avoid direct contact with skin and eyes, avoid breathing dust
Routes of Exposure: Eyes, skin, inhalation of dust, accidental ingestion
Symptoms: Itchy eyes, mild redness, rash on frequent skin contact
Environmental Hazards: No immediate aquatic hazard in solid form, but avoid large releases into waterways
Main Component: Benzotriazole-based stabilizer, ~99% by weight
CAS Number: 3846-71-7 (typical for this additive type)
Other Ingredients: Minor proprietary additives less than 1%, trade secret
Impurities: Inorganic fillers, usually < 0.1%
Physical Form: Solid granules or powder, pale off-white to yellowish hue
Eye Contact: Rinse promptly with gentle flowing water for at least fifteen minutes; remove contact lenses; seek medical advice if irritation persists
Skin Contact: Remove contaminated clothing, wash with soap and plenty of water, seek medical help for continuing rash
Inhalation: Move to fresh air, keep comfortable, get medical attention if coughing or respiratory symptoms develop
Ingestion: Rinse mouth, drink water if conscious, seek prompt medical advice; do not induce vomiting except when instructed by doctor
Most Relevant Symptoms: Eye redness, skin irritation, cough if excessive dust is inhaled
Suitable Extinguishing Media: Use foam, dry chemical powder, or CO2 for localized fires
Special Hazards: Material may emit hazardous fumes (COx, NOx) in fire situations
Protective Equipment: Wear self-contained breathing apparatus and protective turnout gear
Advice for Firefighters: Keep containers cool by spraying water mist, avoid water runoff contamination
Personal Precautions: Wear gloves, protective eyewear, avoid dust generation, ventilate area
Spill Handling: Use approved vacuum or sweep, avoid dry sweeping that stirs up dust, collect in labeled containers
Environmental Precautions: Block entry to drains, keep out of surface water, collect spill with minimal dust
Cleaning Methods: Wash surfaces with soapy water after collection, dispose slurry in accordance with local rules
Handling: Use only in well-ventilated areas, keep away from food and beverages, avoid direct skin contact, wash hands thoroughly after use
Storage: Store in sealed, labeled containers in dry, cool location, keep away from sunlight and incompatible materials (strong acids, oxidizers), avoid humidity exposure to reduce caking risk
Incompatibility: Strong oxidizers, acids can react and degrade stabilizer
Exposure Limits: No occupational exposure limits published; handle as nuisance dust OEL/PTWA 10 mg/m³
Engineering Controls: Provide local exhaust ventilation, especially for powder handling and mixing areas
PPE: Use nitrile gloves, goggles or face shield, dust respirator (especially if large amounts stirred or poured)
Hygienic Practices: Wash hands before eating, no smoking in product handling areas, do not reuse contaminated clothing before thorough cleaning
Appearance: White to pale yellow granular or powdered solid
Odor: Faint, not strongly recognizable
Odor Threshold: Not determined
pH: Not applicable (insoluble in water)
Melting Point: Around 150–175 °C
Boiling Point: Decomposes before boiling
Flash Point: >230 °C
Vapor Pressure: Negligible at ambient temperature
Solubility: Insoluble in water, soluble in organic solvents like acetone and toluene
Density: About 1.16–1.18 g/cm³
Partition Coefficient (log Kow): Approximately 6 (indicates high affinity for organic phases)
Chemical Stability: Stable under standard storage and handling conditions
Stability to Light: Designed to resist degradation from UV exposure in end-use, but pure form should be kept from direct sunlight for shelf-life
Hazardous Polymerization: Does not occur
Incompatible Materials: Avoid mixing directly with strong acids/oxidizers
Decomposition Products: Under fire or high heat, can release toxic fumes including NOx, CO, small amounts of hydrogen cyanide
Conditions to Avoid: Prevent overheating, avoid moisture ingress, seal containers tightly after use
Acute Oral Toxicity: LD50 (rat) > 2000 mg/kg; considered low toxicity if ingested in small quantities
Skin Irritation: Can cause mild irritation on frequent or prolonged contact
Eye Irritation: Mild, reversible irritation based on related compounds
Respiratory Sensitization: Dust may cause mild irritation of mucous membranes
Skin Sensitization: Sensitization possible after repeated exposure
Carcinogenicity: No carcinogenic effects noted in standard animal studies available in published data
Mutagenicity: Negative in common assays
Reproductive Effects: No evidence of reproductive toxicity at typical workplace exposures
Acute Aquatic Toxicity: Low risk if used and disposed correctly; LC50 for fish > 100 mg/l (96h)
Persistence and Degradability: Not readily biodegradable; may persist in sediment
Bioaccumulation: Potential to bioaccumulate in aquatic organisms based on high Kow, so avoid long-term release
Mobility in Soil: Strong binding to particulates; unlikely to migrate deep into groundwater
Other Adverse Effects: High release levels may impact sediment-dwelling organisms adversely
Product Disposal: Send unused or excess material to certified incinerator or hazardous waste facility in accordance with local, state, and national regulations
Contaminated Packaging: Triple rinse containers, puncture to prevent reuse, send for approved landfill or recycling
Sewage Disposal: Do not flush large amounts into sewers or surface water
UN Number: Not regulated for road, rail, sea, or air shipment
Proper Shipping Name: Not regulated as dangerous good
Hazard Class: Non-hazardous
Packing Group: No classification required
Environmental Hazards: Not a marine pollutant by IMDG code
Special Transport Precautions: Avoid packaging breaches, keep dry during transit, keep container upright and secure
Safety, Health and Environmental Regulations: Registered under EU REACH, TSCA (US), and similar chemical inventories globally
Labelling Requirements: GHS-compliant labeling with safety phrases, pictograms, and supplier details
Notifiable Substances: Does not contain substances subject to mandatory reporting thresholds under major regulatory authorities
VOC Content: Zero VOC according to current definitions
OSHA HazCom Status: Regulated as hazardous chemical for workplace communication
Chemical Inventory Status: Fully compliant and listed
